diff options
Diffstat (limited to 'block/dirty-bitmap.c')
| -rw-r--r-- | block/dirty-bitmap.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 7dc5b559d0..fa411f9e87 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -209,7 +209,7 @@ bool bdrv_dirty_bitmap_qmp_locked(BdrvDirtyBitmap *bitmap) /* Called with BQL taken. */ bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap) { - return !(bitmap->disabled || bitmap->successor); + return !bitmap->disabled; } /* Called with BQL taken. */ @@ -236,6 +236,7 @@ static bool bdrv_dirty_bitmap_recording(BdrvDirtyBitmap *bitmap) /** * Create a successor bitmap destined to replace this bitmap after an operation. * Requires that the bitmap is not user_locked and has no successor. + * The successor will be enabled if the parent bitmap was. * Called with BQL taken. */ int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs, @@ -264,6 +265,7 @@ int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs, /* Successor will be on or off based on our current state. */ child->disabled = bitmap->disabled; + bitmap->disabled = true; /* Install the successor and freeze the parent */ bitmap->successor = child; @@ -329,7 +331,8 @@ BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState *bs, /** * In cases of failure where we can no longer safely delete the parent, * we may wish to re-join the parent and child/successor. - * The merged parent will not be user_locked, nor explicitly re-enabled. + * The merged parent will not be user_locked. + * The marged parent will be enabled if and only if the successor was enabled. * Called within bdrv_dirty_bitmap_lock..unlock and with BQL taken. */ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs, @@ -347,6 +350,8 @@ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs, error_setg(errp, "Merging of parent and successor bitmap failed"); return NULL; } + + parent->disabled = successor->disabled; bdrv_release_dirty_bitmap_locked(successor); parent->successor = NULL; |